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Product News
Reference: FTD0008
Date: April, 2007
Vinculum reference design allows rapid USB mass
storage interface development
Embedded Systems Conference, San Jose, April 3rd, 2007. Future Technology
Devices International Limited, (FTDI) announces availability of the VF2F2
reference design module for its Vinculum VNC1L embedded USB host
controller. The design incorporates a practical firmware application that
demonstrates file transfer using the USB mass storage class interface. It
permits moving files from a USB device, such as a digital camera, to a USB
flash disk. The design could also be used to transfer files between other mass
storage class devices such as MP3 players or between two USB flash disks.
The module is equipped with two USB type A sockets and four control buttons.
An onboard DC-DC converter provides 5V and 3.3V supply from the attached
battery pack that holds 2 x AAA cells. Four LEDs provide indication of flash disk
enumeration, file copy, power and error conditions.
The VNC1L IC provides all USB host interface and data transfer functions in
addition to encapsulating the USB device classes. It also manages the file
allocation table (FAT) structure by use of a straightforward command set.
Vinculum is based around a unique 8-bit processor as the controller. A 32- bit
co-processor provides file system calculations and two direct memory access
(DMA) engines handle data transfers. The device contains 64Kbytes of
embedded flash program memory and 4Kbytes of internal data SRAM.
Programming of its 8-bit core is by an easy to use high level assembly language
that typically produces code half the size of other similar controllers. The
VNC1L is specifically targeted at embedded USB controller applications. The
single, low power IC requires just a crystal and a few passive components to
bring USB connectivity to a wide range of devices that previously did not have
the capability.
The VF2F2 is supplied fully assembled together with schematics, firmware and
printed circuit board gerber files. They are also available for download from the
Vinculum web site.
For further information and reader enquiries:
Fred Dart, Future Technology Devices International Limited, 373 Scotland Street, Glasgow, G5
8QB. Scotland. UK
+44 (0) 141 429 2777
+44 (0) 141 429 2758
E-mail: [email protected]
Jim Kenney, Future Technology Devices International Ltd.
7235 NW Evergreen Parkway, Suite
600, Hillsboro, Oregon 97124-5803
Tel: 503-547-0988
Fax: 503-547-0987
E-mail: [email protected]
For further information, text and graphics by email or to discuss feature
article opportunities:
Robert Huntley, Publitek Limited, 18 Brock Street, Bath, BA1 2LW, United Kingdom
+44 (0)1225 470 000
+44 (0)1225 470 047
E-mail: [email protected]
About FTDI
Future Technology Devices International (FTDI) specialise in the design and supply of silicon
and software solutions for the Universal Serial Bus (USB). FTDI offer a simple route to USB
migration by combining easy to implement IC devices with proven, ready to use, royalty-free
USB firmware and driver software. The company’s single and multi-channel USB peripheral
devices come with an easy to use UART or FIFO interface. These popular devices can be used
in legacy USB to RS232/RS422 converter applications or to quickly interface an MCU, PLD, or
FPGA to USB. A wide range of evaluation kits and modules are available to evaluate FTDI’s
silicon prior to design-in.
Vinculum is FTDI’s brand name for a range of USB Host / Slave Controller ICs that provide easy
implementation of USB host controller functionality within products, and utilise FTDI's tried and
tested embedded firmware to significantly reduce development costs and time to market.
FTDI is a fabless semiconductor company headquartered in Glasgow, UK, and has regional
offices in Oregon, USA, and Taipei, Taiwan. More information is available at